a few facts about 49:
449 is a prime number.
449 is the smallest prime number
whose digits are composite perfect squares.
449 is the 87th prime. Note that
42 +
42 +
92 =
82 +
72 = 113.
449 is the sum
of five consecutive prime numbers: 449 = 79 + 83 + 89 + 97 + 101.
(copied from Mathematical Association of America who copied it from Prime Curios)
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